GNU bug report logs - #15214
24.3.50; `Revert This Session's Customization' does not do what it says

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Message #10 received at control <at> debbugs.gnu.org (full text, mbox):

From: Mauro Aranda <maurooaranda <at> gmail.com>
To: 15214 <at> debbugs.gnu.org
Cc: Drew Adams <drew.adams <at> oracle.com>
Subject: Re: bug#15214: 24.3.50; `Revert This Session's Customization' does
 not do what it says
Date: Mon, 30 Dec 2019 18:30:31 -0300

[Message part 1 (text/plain, inline)]

tags 15214 patch
thanks

Drew Adams <drew.adams <at> oracle.com> writes:

> 1. emacs -Q
>
> M-x customize-option backup-by-copying
>
> Click Toggle, then State and Set For Current Session.
> You have changed the value.
>
> Click State and Revert This Session's Customization.
>
> The current value does not change back to what it was before you changed
> the setting for the session.  This session's customization was not
> reverted.  However, even though the value was not changed, you see the
> message "CHANGED outside Customize".

I can reproduce this in latest master and emacs-27 branch.

> 2. The State choice of Revert This Session's Customization is not even
> documented at (emacs) `Changing a Variable'.  Other State actions are
> documented.  So it's hard to tell whether #1 above is really a bug: it's
> not even clear what this menu item is supposed to do.

Current (emacs) Changing a Variable says:
‘Revert This Session's Customizations’
     This restores the value of the variable to the last saved value, if
     there was one.  Otherwise it restores the standard value.  It
     updates the text accordingly.

The function that runs for that option is custom-variable-reset-saved,
and the doc string of custom-variable-reset-saved says something similar.

The attached patch fixes custom-variable-reset-saved to do what it says
it does when the variable has no previous saved value.

Best regards,
Mauro.

[Message part 2 (text/html, inline)]

[0001-Reset-to-the-standard-value-when-reverting-session-s.patch (text/x-patch, attachment)]

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